v3.22.0.1
Parent Company - Condensed Consolidated Statements of Cash Flows (Parenthetical) (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
SUPPLEMENTAL DISCLOSURES:      
Cash payments for interest, net of capitalized interest $ 5,521 $ 9,091 $ 18,645
Cash payments/(refunds) for income taxes, net 6,195 2,754 1,266
Group Inc. [Member]      
SUPPLEMENTAL DISCLOSURES:      
Cash payments for interest, net of capitalized interest 4,720 5,920 9,530
Cash payments to subsidiaries for interest, net of capitalized interest 1,330 1,900 3,010
Cash payments/(refunds) for income taxes, net $ 3,740 $ 1,370 $ 272